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US 12,392,022 B2Granted
Coated tool for machining of difficult to process materials
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorDenis Kurapov
Life of this patent
Estimating the term…
Abstract
The present invention relates to a tool (100) for machining workpieces (200), comprising a surface (110) which is at least partially covered by a PVD deposited wear-resistant coating (120), said wear resistant coating (120) comprising one or more wear-resistant layers (121, 122), the coating having a modulus of elasticity, E, which is in a range 300 GPa≤E<350 GPa, and further having a hardness, H, which is greater than 30 GPa.
Claims14
A tool for machining workpieces, the tool comprising
- a surface which is at least partially covered by a PVD deposited wear-resistant coating,
- said wear resistant coating comprising two or more wear-resistant layers, the wear-resistant coating having a modulus of elasticity, E, which is in a range 300 GPa≤E<350 GPa, and further having a hardness, which is greater than 30 GPa, wherein at least one of the two or more wear-resistant layers is an aluminium titanium nitride layer (AlTiN layer) having chemical composition in atomic percentage AlxTi1-xN with x in the range 0.5<x≤0.9, wherein at least two of the two or more wear-resistant layers are made of materials having the same elements and same chemical composition but differing in mechanical properties.
Dependencies are inferred from the claim text.